Improvement in elastic rollers for wringers



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Km PHDTO-LITHOGRAPHER. WASHINGTON. D. CV

AUGUSTUS o. Bonini, or rncvinnuoa. RHODE isLAND.

vLetters Patent No. 109,579, dated November 29,1870.

IMPROVEMENT IN EL'STIC ROLLERS FOR WRINGERS, &c.

The Schedule referred to in these Letters` Patent and making part of the same.

To all whom, it may concern Beit known that I, AUGUSTUS O. BoUnN, of the cityand county of 1Brovidence, in the State of Rhode Island, have invented a new and useful Improvement; in Elastic Rollers for Wringing-Maohines and' for other purposes; and I do hereby declare that the following specilication, taken in connection with the drawing making a part of thesame, lis a f iill, clear,

clear, and enact description thereof.

rollers in their use are subjected.

My invention has Ano 'reference to the mechanical devices for attaching the elastic-roller to its shaft,

althougha convenient means for doingthis is shown in the drawing; but f,

It relates entirely` to a method of constructing the rubber body of the roller which will enable it to be -securedirmly'to the'shaft by several of the common modes of making `such mechanical attachment. A

A I propose to construct the. roller partly ofthe ordinaiy rubber manufactured for suoli purpose, and partly of fibrous rubber, or rubber in which grained.

cotton or other vegetable fiber is intimately mixed,

or, in place of the latter, to employ those compositions which, when vulcanized, make what is known as -hard rubber, which possesses great resisting power; and

I so arrange these two materials that the former shall constitute the outer surface of the roller, and the latter shall'furnisli the resistance to the-twisting strain of the s h'aft. Such two compositions, though differing in their respective qualities of tensilestrength, are, nevertheless, homogeneous in character, vulcanizable attire same teinperature,rand capable of forining one united mass, ii'icapablc of peeling apart.

,In the drawingv A represents that portion of the roller which is made of'soft rubber, whitened usually by the adrnixturc of the oxide ofzinc or other agent.

B is the driving-shaft ofiron. g

C, the portion of the roller which is Imade of rubliei-,ain'leloth ground np and made into aplastic mass,

or it 'may represent a composition which, when vulcanized, will forni hard rubber.

` In .oase rubber mixed with brons matter is to be Iused, the refuse cuttings of rubber cloth will be found to be convenient and economical.

D represents wire'rods attached to the shaft, the same being one of several known mechanical means for attaching the roller to the shaft. Y

vThe mixed rubber and fibrous composition, (or the hard-rubber compositionsnb'stituted therefor,) and the white-rubber compositionare to be respectively rolled into sheets in a way familiar to manufacturers of rubbei'.

The end of the sheetsof fibrous rubber or hardrubber composition G is to be wound around the shaft B, and the wires D, if the mechanical devices -for securing the roller to the shaft shown in the drawing are employed, or if other means for securing the roller are used, .is to be applied to the points where the strain occasioned by turning the shaft first comes upo'n the roller.

The sheet of rubber A is next to be overlaid upon what reina-ins of the sheet C, and the two are tobe wound together around the shaft, fold upon fold; the sheet. ofl white rubbei' being always ofthe greater length, so as to forni an outer yielding surface for the roller. rIhe roller so made up is next to be vulcanized by heat in the common way.

It will bewell ,understood bythose conversant with` the manufacture, that the two compositions described as composing the elastic roller will unite perfectly, and, when vulcanized,-the portion O will be capable of resisting any strain to which it will be subjected in `practical use without tearing away fiom the shaft fastenings, or peeling from the white rubber portion.

What I claim as my invention, arid-desire to se-` cure by Letters Patent, is-

lhe improvement in the construction of elastic rollers for wringing-machines and for other purposes, which consists in winding, so as to form a roller vto be subsequently vulcanized, a sheet of ground rubber and cloth, C, (or, instead thereof, a sheet of rubber compound, which, when vulcanized, will become hard riibber,) in combination with a sheet of ordinary soft rubber A, such two materials being`disposed with re-v spect to each other, so as to form al rollei` substantially as describerhfor the purposes specified. Witnessesz; AUGUSTUS vO. BOURN."

PETER F. HUGHEs, Onvi'LLn PECKHAM. 

